Door closer and check.



No. 695,987. Patented Mar. 25, I902 F. A. WINSLOW.

DOOR CLOSER AND CHECK.

(Application filed Apr. 5, 1901.} (.No Model.) 2 Sheets-Sheet l,

No. 695,987. Patented Mar. 25, I902.

F. A. WINSLOW.

DOOR CLOSER ANDOHEOK.

(Application filed Apr. 5, 1901A 2 Sheets Sheet 2.

(No Model.)

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llniTTnn STATES PATENT Urrrcn.

FRANCIS A. WINSLOW, or CHICAGO, ILLINOIS.

DOOR CLOSER AND CHECK.

SPECIFIGATION forming part of Letters Patent No. 695,987, dated March25, 1902.

Serial No. 54,442. (No model.)

To aZZ whom, it may concern:

Beit known that I, FRANCIS A.W1NsLow, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in DoorClosers and Checks, of which the following is a specification.

My invention relates to certain improvements in door-closers, the objectbeing to provide means for closing the door, which will be concealedfrom view, leaving no unsightly projecting portions, and, further, toprovide means for limiting the maximum velocity of the door inclosing,so as to prevent slamming, suchmeans to be soinclosedandarranged with respect to the door as to be concealed and at the sametime involve no objectionable variation in the form thereof.

To such end the invention consists in certain novel characteristics tobe fully described below and definitely pointed out in the claims.

In the drawings, Figure 1 is a vertical median section of the door inline 1 1 of Fig. 2, the upper portion being broken away as in1- materialto the invention. Fig. 2 is a vertical transverse section in the brokenline 2 2 of Fig. 1. Fig. 3 is a horizontal section in the line 3 3 ofFig. 2. Fig. at is a view showing the same section as Fig. 3 with thedoor in its open position, and Fig. 5 is an elevation of the completedoor.

Referring to these drawings, A represents a door-casing, and B a door,both beiugpreferably of hollow construction, such as is common in manyof the cast-metal doors now in use. The door is secured to the casing bymeans of ordinary butt-hinges (Land the edge of the door at I) is cutaway to provide access to the interior thereof. Opposite this openingthe casing is perforated at a to receive the screw-threaded shank cl ofa double eyebolt D, the threaded end of the shank being screwed into anupright T-iron E, which is a part of the framework to which the casingissecured. The eyebolt contains two eyes d 61 extending into the interiorof the door and being eccentrically disposed with reference to thehinges. To the eye d is secured a link F, to the other end of which isfastened a coiled spring G, extending across within the interior of thehollow middle rail of the door and secured to a turnbuckle H, heldagainst rotation by the walls of the door and provided,with a screwI,the head of which, i, is countersunk in the socket b in the free edgeof the door. In the door here shown the upper portion is occupied byplate-glass J, the lower portion divided by means of a middle mullion K,separating two panelslc 7c. W'ithin the hollow interior of the mullion Ka lever M is pivoted between its ends at m, preferably by means of aplate m, secured to the door by screws m m To the shorter upper end ofthe lever is. pivoted a link N, the opposite end of which is pivoted tothe eye (I of the eyebolt D. In the lower hollow rail of the door is ahorizontal cylinder 0, extending into the hinge-style and secured to theedge wall thereof by means of a screw 0. The cylinder is preferably openat its opposite end and contains a piston 0 on the end of a rod 0pivoted to the end of the lever M at 0 The end of the rod N, which ispivoted to the eyebolt, is preferably curved toward thehingeaxis, asseen at n, so as to clear the edge of the door when the latter takes theposition seen in Fig. at, and the link F is preferably curved in theopposite direction, so as to present its convex facef to the edge of thedoor and slide thereon to prevent the spring G from rubbing along thatside as it is extended in the opening of the door. As the door swingsfrom the closed to the open position the coiled spring is forciblyextended and the piston par tially withdrawn from the cylinder, to whichmovement little resistance is offered, because of the construction ofthe piston, as shown, which is the common construction in -pneu maticchecks. When the door is released, the spring pulling eccentrically uponthe casing draws the door shut, and the rod-and-lever connectionsbetween the eyebolt and the piston force the latter toward the closedend of the cylinder, compressing the air and checking the movement untilsufficient air may escape. The lever-M multiplies the-range of movementof the piston, so as to give a much more satisfactory action and requireless nicety of adjustment.

It should be noticed that all of the parts are wholly within the hollowdoor when the latter is closed and nothing is in sight to mar theornamental or symmetrical appearance of the door. Furthermore, even whenthe door is open theparts exposed are so small and so inconspicuous thatthey are not objectionable. The abundance of space provided by thisarrangement gives opportunity for much greater range of adjustment, aswell as much more even working of the spring. The screw-headt' is easilyaccessible at the free edge of the door and aflfords means for adjustingthe spring tension to the exact force desired.

I claim as new and desire to secure by Letters Patent 1. The combinationwith a casing, of a door hinged to the casing and provided with aninternal recess to receive and allow the lateral movement of anapproximately vertical lever, a lever centrally pivoted in said recess,a checking-cylinder within the door and having its plunger pivotallyconnected to one arm of the lever, and a link pivoted to the oppositearm of the lever, extending toward the hinged side of the door, andsecured to the casing by a pivotal connection, substantially asdescribed.

2. The combination with aside jamb or casing of a door hinged to thecasing and provided with a recess extending from edge to edge thereof, abearing secured to the casing eccentrically to the pintle-line of thehinges and in the plane of the door, a tension-adjusting screw workingin the free edge of the door and extending inward therefrom toward theopposite edge, and an extensible Spring located in said recess andhaving one end connected to said bearing and the other attached to saidscrew by connections allowing independent rotation of the latter,substan-' tially as described.

3. The combination with a side jamb or casing, of a door hinged theretoand provided with a recess extending from edge to edge thereof, abearing secured to the casing eccentrically to the pintle-line of thehinges, a link pivotally attached to said bearing and extending intosaid recess when the door is closed, a tension-adjusting screw seated inthe opposite end of the recess with its head accessible at the doorsfree edge, an extensible spring located in said recess and having oneend connected to the free end of said link and the other attached tosaid screw by a swivel connection, a checking-cylinder and its plungerwithin the door, a lever centrally pivoted within the door and havingone end pivotally connected to said plunger, and a link pivotallyconnecting the opposite end of the lever to said bearing, substantiallyas described.

4:. The combination with a casing, of a door laterally hinged theretoand provided with an internal recess extending from edge to edge, of abearing secured to the casing upon the hinged side of the door and whenthe door is closed projecting into said recess, a curved link pivoted tosaid bearing, a spring-coil having one end attached to the free end ofthe link, a nutsecured to the opposite end of the coil, a socket securedin the recess at the free side of the door, and a screw arranged torotate without advance in said socket and extending inward in saidrecess and engaging said nut, substantially as described.

5. The combination with a door hingedto a casing and having the partssurrounding its panels hollow, of a check-cylinder located in the cavityon one side of a panel, a link similarly located upon the opposite sideof the same panel and pivotally connected to the casing on the hingeside of the door, an approximately vertical centrally-pivoted leverlying in the cavity upon the third side of said panel and having itsarms, respectively, pivotally connected to the link and the plunger ofthe check-cylinder,substantial1y as described.

In witness whereof I have hereunto set my hand at Chicago, in the countyof Cook and State of Illinois, this 11th day of March, A. D. 1901.

"FRANCIS A. VVINSLOV.

XVitnesses:

CHAs. O. SHERVEY, S. Buss.

